665534222 has 16 divisors (see below), whose sum is σ = 1032221232. Its totient is φ = 321612480.

The previous prime is 665534183. The next prime is 665534239. The reversal of 665534222 is 222435566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29153 + ... + 46700.

It is an arithmetic number, because the mean of its divisors is an integer number (64513827).

Almost surely, 2^665534222 is an apocalyptic number.

665534222 is a deficient number, since it is larger than the sum of its proper divisors (366687010).

665534222 is a wasteful number, since it uses less digits than its factorization.

665534222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76003.

The product of its digits is 86400, while the sum is 35.

The square root of 665534222 is about 25797.9499573125. The cubic root of 665534222 is about 873.0855436259.

Adding to 665534222 its reverse (222435566), we get a palindrome (887969788).

The spelling of 665534222 in words is "six hundred sixty-five million, five hundred thirty-four thousand, two hundred twenty-two".